Henry Dillon, 11th Viscount Dillon (1705–1787) was an Irish peer and a soldier in French service. He was the colonel proprietor of Dillon's Regiment, an Irish regiment of foot in French service, in 1741–1744 and again in 1747–1767. In the War of the Polish Succession (1733–1735), he fought at the sieges of Kehl and Philippsburg. In the War of the Austrian Succession (1740–1748), he was present at the Battle of Dettingen in 1743, on the French side, while King George II was present on the English side.

Theobald Dillon, 7th Viscount Dillon of Costello-Gallin supported King James II, was attainted on 11 May 1691, and fell in the Battle of Aughrim during the Williamite War. His attainder was reversed in favour of the 8th Viscount on 20 June 1694.